Negative calorie diet

Negative Calorie Diet is a concept in dieting and weight loss that suggests the body uses more energy to digest certain foods than the foods themselves contain. This idea is based on the thermic effect of food, which is the energy required by the body to digest, absorb, and dispose of ingested nutrients.

The Negative Calorie Diet is often associated with foods that are low in calories, such as celery, grapefruit, lemon, lime, apple, lettuce, broccoli, and cabbage. However, there is no scientific evidence to support the idea that any food has a negative caloric impact.

Concept

The Negative Calorie Diet is based on the concept of the thermic effect of food (TEF), which is the amount of energy expenditure above the resting metabolic rate due to the cost of processing food for use and storage. The TEF for protein is 20-35% of the energy consumed, for carbohydrates it is 5-15%, and for fats it is 0-3%.

The idea behind the Negative Calorie Diet is that some foods require more energy to digest than they provide in calories. For example, a stalk of celery provides 6 calories to the body, but the body expends only half of that energy to digest it.

Criticism

The Negative Calorie Diet has been criticized for its lack of scientific evidence. No food has been scientifically proven to have a negative caloric impact. Moreover, even if such foods did exist, they would not provide a viable solution for weight loss as they would not provide the necessary nutrients for the body to function properly.

See also

• Dieting
• Weight loss
• Thermic effect of food

References

Negative calorie diet Resources
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